Speech enhancing method and device, and denoising communication headphone enhancing method and device, and denoising communication headphones

a technology of speech enhancement and speech signal, which is applied in the direction of speech analysis, instruments, transducer details, etc., can solve the problems of severe damage to speech signal, inability to obtain any useful information from remote users, and damage to people's hearing and physical and psychological health, so as to improve the snr and the quality of speech, the effect of effective combining vibration microphones

US9240195B2Active Publication Date: 2016-01-19GOERTEK INC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Patents(United States)
Current Assignee / Owner
Publication Date
2016-01-19

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Abstract

The present invention discloses a speech enhancing method, a speech enhancing device and a denoising communication headphone. In the solutions of the present invention, a first sound signal that comprises a user's speech signal transmitted through coupling vibration and an ambient noise signal transmitted through the air and a second sound signal that is mainly an ambient noise signal transmitted through the air are picked up by a primary vibration microphone and a secondary vibration microphone, respectively, that have a specific relative positional relationship therebetween, and the ambient noise signals picked up by the two vibration microphones are correlated with each other; a control parameter used to control an updating speed of an adaptive filter is determined according to the first sound signal and the second sound signal; the first sound signal is denoised and filtered according to the second sound signal and the control parameter; and the denoised and filtered speech signal is further denoised and speech high-frequency enhancement is performed thereon. The technical solutions of the present invention can effectively improve the signal to noise ratio (SNR) and the quality of speech in an environment of highly intense noises.
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Description

TECHNICAL FIELD

[0001] The present invention relates to the field of speech signal processing technologies, and more particularly, to a speech enhancing method and a speech enhancing device for a transmitter terminal, and a denoising communication headphone.DESCRIPTION OF RELATED ART

[0002] With the progress of technologies and improvement of social informatization, the communication among people also becomes ever-increasingly efficient and convenient, and wide application of various communication apparatuses and technologies provides great convenience for people's life and increases the working efficiency. Noise problems generated with the development of the society, however, have a serious influence on definition and intelligibility of communication speech. When the intensity of noises increases to a certain level, not only communication cannot continue, but also people's hearing and physical and psychological health will be damaged. Particularly in some places such as airports, stati...

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Embodiment Construction

[0030]Hereinbelow, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0031]The speech enhancing method of the present invention comprises two parts. The first part is to enhance speech acoustically and provide for the electronic speech enhancing algorithm a primary signal of a desired signal to noise ratio (SNR) and a noise reference signal highly correlated with the primary signal. The second part is to further enhance the speech in the signal through acoustic signal processing to increase the SNR of the speech and improve intelligibility and comfortableness of the speech of the transmitter terminal. Hereinbelow, the technical solutions for enhancing speech in the acoustic aspect and in the electronic aspect will be elucidated, respectively.

[0032]In the acoustic aspect, the present invention adopts the structure of dual vibration microphones. The primary vibration microphone and the secondary vibration microphone are similar in...